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Eleven new boreal species of Inocybe with nodulose spores

Abstract

The diversity and characteristics of species within Inocybe section Inocybe Singer were investigated in Finland. As a result, 11 species are described here as new: Inocybe acutoides, I. amicta, I. boreocarelica, I. bufonia, I. ericetorum, I. kittilensis, I. lapponica, I. paludicola, I. porcorum, I. pseudoteraturgus, and I. silvae-herbaceae. Detailed macroscopic and microscopic descriptions, habitat information, and ITS sequence data are included. The new species are compared with each other and with similar species within the section, and a key is provided for the European boreal species. The types of Inocybe acuta, I. alpigenes, I. borealis, I. cicatricata, I. giacomi, I. heterochrominea, I. hinnulea, I. johannae, I. proximella, I. purpureobadia, I. putilla, I. striaepes, I. taxocystis, I. teraturgus, I. tetragonospora, and I. umbrinodisca are treated. The often poorly understood Inocybe acuta, I. borealis, I. giacomi, and I. proximella, as well as the recently described I. purpureobadia, are characterised on the basis of our own material. Inocybe borealis, I. giacomi, and I. purpureobadia are reported from the boreal zone for the first time. Inocybe borealis appears to be a remarkably variable species. Inocybe striata and I. umbrinodisca are reduced to synonyms of I. proximella, I. heterochrominea is reduced to a synonym of I. borealis, and I. tetragonospora to a synonym of I. alpigenes. In addition, Inocybe hinnulea and I. striaepes are reduced to synonyms of I. giacomi, and the previously supposed synonymy of I. johannae with I. giacomi is supported by ITS analysis.

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Acknowledgments

We gratefully acknowledge Ilkka Kytövuori, Enrico Bizio, Stig Jacobsson, and Fernando Esteve-Raventós for contributing specimens for our study. Thanks are extended to Esteri Ohenoja (OULU), and the curators of the herbaria AH, C, G, GB, H, IB, K, MICH, PC, WTU, and ZT for sending loans. Johann Stangl† contributed many identifications of Finnish Inocybe specimens of TUR, TUR-A, OULU, H, and KUO. Seppo Huhtinen is acknowledged for important practical help, Ruth Newell for information about the type of I. heterochrominea in ACAD, Karen Hansen and Emanuele Campo for information about the type of I. putilla, and P. Brandon Matheny and an anonymous reviewer for their comments.

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Correspondence to Katri Kokkonen.

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Fig. S1
figure36

Inocybe acutoides. Holotype. Photograph J. Vauras (JPEG 308 kb)

Fig. S2
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Inocybe borealis. Finland, Kuusamo, Kokkonen & Vauras 26948F. Photograph J. Vauras (JPEG 157 kb)

Fig. S3
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Inocybe borealis. Norway, Svalbard, Huhtinen 83/281. Photograph S. Huhtinen (JPEG 329 kb)

Fig. S4
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Inocybe bufonia. Finland, Kuusamo, Vauras & Kokkonen 69/09. Photograph J. Vauras (JPEG 250 kb)

Fig. S5
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Inocybe bufonia. Finland, Nurmes, Vauras & Kokkonen, 60/10. Photograph K. Kokkonen (JPEG 942 kb)

Fig. S6
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Inocybe bufonia, subgroup 1. Finland, Valtimo, Kokkonen 44/09. Photograph K. Kokkonen (JPEG 250 kb)

Fig. S7
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Inocybe bufonia, subgroup 1. Kokkonen 165/03. Photograph K. Kokkonen (JPEG 178 kb)

Fig.S8
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Inocybe boreocarelica. Finland, Nurmes, Kokkonen 19/09. Photograph K. Kokkonen (JPEG 247 kb)

Fig. S9
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Inocybe silvae-herbaceae. Holotype. Photograph J. Vauras (JPEG 258 kb)

Fig. S10
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Inocybe silvae-herbaceae. Finland, Paltamo, Vauras 27582F. Photograph J. Vauras (JPEG 812 kb)

Fig. S11
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Inocybe amicta. Finland, Kuopio, Vauras 570. Photograph J. Vauras (JPEG 197 kb)

Fig. S12
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Inocybe amicta. Finland, Kuusamo, Kokkonen 44/10. Photograph K. Kokkonen (JPEG 807 kb)

Fig. S13
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Inocybe amicta. Kokkonen 32/10. Photograph K. Kokkonen (JPEG 689 kb)

Fig. S14
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Inocybe ericetorum. Finland, Kesälahti, Vauras 22506F. Photograph J. Vauras (JPEG 931 kb)

Fig. S15
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Inocybe pseudoteraturgus. Finland, Houtskari, Vauras 14266F. Photograph J. Vauras (JPEG 963 kb)

Fig. S16
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Inocybe pseudoteraturgus. Finland, Kuusamo, Vauras 26939F. Photograph J. Vauras (JPEG 272 kb)

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Kokkonen, K., Vauras, J. Eleven new boreal species of Inocybe with nodulose spores. Mycol Progress 11, 299–341 (2012). https://doi.org/10.1007/s11557-011-0783-9

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Keywords

  • Agaricales
  • Finland
  • Inocybe
  • ITS
  • Taxonomy